National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Mostly Cloudy

64°F

18°C

Humidity 73%
Wind Speed NW 17 mph
Barometer 29.80 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 26 Dec 12:45 pm CST
Extended Forecast for

2 Miles S Marine IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 68. Northwest wind 7 to 13 mph.

    High: 68 °F

    Mostly Sunny

  • Tonight

    Tonight: Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 44. Northwest wind around 6 mph becoming calm in the evening.

    Low: 44 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 62. Southeast wind 5 to 13 mph, with gusts as high as 20 mph.

    High: 62 °F

    Patchy Fog
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain between midnight and 3am, then a slight chance of rain and thunderstorms after 3am. Cloudy, with a low around 58. South wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 58 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: A chance of rain and thunderstorms, then rain and possibly a thunderstorm after noon. High near 71. South wind 10 to 18 mph becoming west in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 90%.

    High: 71 °F

    Chance Rain
    then Rain

  • Sunday Night

    Sunday Night: Rain likely, possibly mixing with snow after 9pm, then gradually ending. Mostly cloudy, with a low around 20. Blustery. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 20 °F

    Blustery.
    Rain/Snow
    Likely then
    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 26. Blustery.

    High: 26 °F

    Mostly Sunny
    and Blustery

  • Monday Night

    Monday Night: Mostly clear, with a low around 18.

    Low: 18 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 34.

    High: 34 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 68. Northwest wind 7 to 13 mph.
Tonight
Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 44. Northwest wind around 6 mph becoming calm in the evening.
Saturday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 62. Southeast wind 5 to 13 mph, with gusts as high as 20 mph.
Saturday Night
A slight chance of rain between midnight and 3am, then a slight chance of rain and thunderstorms after 3am. Cloudy, with a low around 58. South wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Sunday
A chance of rain and thunderstorms, then rain and possibly a thunderstorm after noon. High near 71. South wind 10 to 18 mph becoming west in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 90%.
Sunday Night
Rain likely, possibly mixing with snow after 9pm, then gradually ending. Mostly cloudy, with a low around 20. Blustery. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Monday
Mostly sunny, with a high near 26. Blustery.
Monday Night
Mostly clear, with a low around 18.
Tuesday
Sunny, with a high near 34.
Tuesday Night
Partly cloudy, with a low around 26.
Wednesday
Partly sunny, with a high near 41.
Wednesday Night
Mostly cloudy, with a low around 19.
New Year's Day
Partly sunny, with a high near 29.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Marine IL
 38.76°N 89.77°W (Elev. 499 ft)
Last Update:
1:16 pm CST Dec 26, 2025
Forecast Valid:
1pm CST Dec 26, 2025-6pm CST Jan 1, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation